Georges l



G.L.E.`PT0RIN, LOCK.

Patented June 7 (No Model.)

Nol 605,337.

/N VENTO/ i 3M A #omi/frs side of the casing removed.

` usual style, apertured at one side to receive llNIrn dIArns ArtNr risica.

' GEORGES L. E. rronIN, or SAN FRANCISCO, CALIFORNIA.

LOCK.

SPECIFICATION forming part of Letters Patent'No. 605,337, dated June '7, 1898. Applicant filed Maui 10,1898. serial No. 673.294. (No @aan To all whom it may concern/.-

Beitknown that I, GEORGES L. E. PIITORIN, of San Francisco, in the county of San Francisco and State of California, have invented a new and Improved Lock, of which the following is a full, clear, and exact description.

My invention relates to an improvement in locks of that kind which are adapted for use in connection with doors; and it consists of certain novel features of construction, which will be hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure l is a plan view of my lock with one Fig. 2 is a section taken uponthe line 2 2 ofA Fig. 1. Fig. 3 is a section taken upon the line 3 3 of Fig. l. Fig. 4 is a section taken upon the line 4: 4 of Fig. l with the locking-lever in one position. Fig. 5 is a section taken upon the same line with the locking-lever in another position, and Fig. G is a perspective view showin g the bit of the key. i

As shown in the drawings, this lock is mounted in a rectangular casing A, of the the end of the locking-bolt B. The casing is closed by a removable cover consisting of a plate A', secured in place by screws or any` Theform of the casing is, however, immaterial, as the lock may be inclosed in any suitable casing.

The casing is provided with a securing-sta-` ple Il, adapted to engage the innerend ofthe bolt Band guide itin its movements. The bolt B is provided upon one side with a series of projections forming between them notches 4o f, adapted to be engaged by a pin upon the locking-lever, hereinafter described, so as tol prevent the bolt from being thrown in either direction. Upon the opposite edge of the bolt are projections forming semicircular notches j", adapted to be engaged by the bit of the As herein Shown,

key G to throw the bolt. the lock is constructed with three lockingnotches upon one side and two notchcsfor the engagement of` the key upon the other, this construction beingthat adapted fora double-throw bolt-that is, a bolt which may be given two throwing movements by a double revolution of the key. The number of these notches will be decided by the numbe rof turning movements of the key desired.

At one side of the bolt and extending substantially perpendicular to the direction of the bolt are two pivot-flanges C, which near the end farthest from the bolt are provided with undercut notches C', which extend downward from the side of the ilan ge and then par allel with the side and outward away from the bolt, as clearly shown in Fig. 3, and upon the ends of vthese flanges nearest to the bolt are inwardly-projecting lugs or stops C2. A locking-lever is pivoted upon the Iianges C and is adapted to'engage the bolt to prevent its being thrown. `As herein shown, this lever is constructed as a yoke D, the two arms D/ of which are at such distance apart that they t snuglybetween the flanges G. The outer ends of the arms D are provided with pins d, adapted to enter the notches C' in the pivotilanges, and upon which pins the yoke or locking-leverpivots. That portion of the .arms D lying alongside the the pivot-flanges is made somewhat broader than the remain der. This `forms a shoulder D2, which lies just next the lugs C2 and prevents the yoke from being moved endwise a sullicient distance to disengage its pivots from the slots C. With this construction it is evident that the yoke-pivots may be put in place in the slots O' when the other end of the yoke is raised, this being easy of accomplishment when the cover A' is removed. Unless the outer or swinging end of the lever can be raised the locking-leverqcannot be removed from its place. At the point where the two arms of the yoke meet said lever is 'provided with a central body E, extending in each direction from said point of union. Upon the outer end of this central body is fixed a spring E', adapted to engage the plate or cover A', and thus to hold this end of the yoke down in place, but also to permit the yoke to be raised slightly when force is applied thereto. At the outer end of this centhe same. with downwardly-extending pins c, located near one end thereof.

The key G, which is used 'in connection with the lock, is shown in Fig. G. The bit of' this key is provided with a notch G2, close to the stem thereof, and with a second notch G3, located nearer the other end of the bit. Between these two notches the key is provided with a rib Gr upon each side thereof, making this section of the key of considerably greater thickness than the remainder. The corners'of the rib are beveled, lforming inclines which are adapted to engage the under surface of the inner portion of the central body E of the locking-lever. As the key is turned after insertion within the lock these inclines, engaging the under surface of the yoke or lever, will raise the same slightly, so as to free the bolt from the pin E2, thus permitting the bolt to be thrown. rlhis engagement of the key with the yoke orlocking-lever is before the key engages the bolt. The key engaging the bolt will then throw the bolt, and as it passes from beneath the yoke will allow the bolt to drop into place, the pin E2 entering another one of the notches f and holding the bolt until the yoke is again raised. The bolt is thus positively held in any and all positions, so that it cannot be thrown except when the yoke is raised. The pins c upon the under surface of the yoke at the end nearest the key are intended to engage the bit of any other than the proper key when the latter is inserted in the lock. These pins are placed at such a distance apart that they will permit the bit of an ordinary key to drop between them, and thus hold the key against removal. The casing A may be provided with ribs or projections I to prevent the turning of a key which does not have notches in the proper place.

As shown by dotted lines in Fig. l, keyholes o, a maybe provided in each side of the casing, said `keyholes, if desired, being at right angles to each other. That part of the keyhole which receives the stem may also be surrounded by an in-ternal flange a2, which will support the end of the key.

Having thus described my invention, I claim as new and desire to securel by Letters Patentl. A lock, comprising a sliding bolt, and a pivoted and spring-pressed yoke-shaped locking-lever provided with a central body, one portion of which has an interlocking engagement with the bolt, and the other portion extending to within a short distance of the keyhole, substantially as described.

2. A lock, comprising a sliding bolt, and a pivoted and spring-pressed yoke-shaped lock ing-lever provided with a central body, one portion of which has an interlocking engagement with the bolt and the other portion extending to within a short distance of the keyhole and provided with pins on one face, substantially as and for the purpose set forth.

Said body is preferably provided I 3. A lock, comprising a casing, a sliding bolt provided with notches on opposite sides, a yoke-shape lever having its members loosely pivoted in supports on the casing and provided with a central body, one portion of which is provided with a pin engaging one set of notches of the bolt, the other portion of the body extending to within a short distance of the keyhole and provided on one face with pins, and a spring between the said body and *cas-ing, substantially as described.

4E. A lock, comprising a bolt, having locking projections, a yoke-shaped locking-lever pivoted to swing upon pivots substantially parallel to the bolt, and adapted to engage at its free end said locking projections upon the bolt, a central arm or body projecting near the keyhole and adapted to be engaged by the key before the latter engages the bolt to throw it, and a spring adapted to normally hold said lever in locking engagement with the bolt, in combination with a key having inclines upon the edges of its bit, adapted as the key is rotated, to engage said lever and raise it free of the bolt before engaging the bolt to throw it, substantially as described.

5. A lock, comprising a bolt having locking projections thereon, a yoke-shaped locking-lever pivoted to swing upon pivots substantially parallel to the bolt and adapted to engage at its free end said locking projections upon the bolt, a central body projecting from the yoke-shaped lever near the keyhole and adapted to be engaged by the key before the latter engages the bolt 'to throw it, said central body having'downwardly-projecting pins disposed across the same, and a spring adapted to normally hold said lever in locking engagement with the bolt, in combination with a key having a blade' cross-shaped or formed with a central cross-web, the end cor-, ners of said cross-web being inclined and adapted to engage said lever to swing it free of the bolt before engaging the bolt to throw it, substantially as described.

G. A lock, comprising a bolt provided with means for engagement of a locking-lever and a key therewith, pivot-flanges at one side of the bolt extending substantially at right angles thereto, said flanges having each an undercut notch, a yoke-shaped lever having its arms adapted to fit within said flanges and having pins at the ends of said arms adapted to enter the notches in said flanges, the other end of said lever being adapted to engage and lock the bolt, and the lever being adapted to be engaged by the key and swung upon its pivot to free the bolt, substantially as described. v

7. A lock, comprising a bolt provided with means for engagement of a locking-lever and a key therewith, pivot-fianges at one side of the bolt extending substantially at right angles thereto, said flanges having each an undercut notch, a yoke-shaped lever having its arms adapted to iit within said fianges and having p ins at the ends of said arms adapted IOO IIO

to enter the notches in said flanges, the other engaging said lugs, to prevent longitudinal end of said lever being adapted to engage and movement of the yoke, substantially as de` look the bolt, and the lever being adapted to scribed.

be engaged bythe key and swung upon its GEORGES L. E. PTORIN. 5 pivot to free Jalle bolt, the pivot-flanges hav- Witnesses:

ing,` retainingdugs at the end opposite the F.THOMAS,

pivot-noten, and Jehe yoke having` shoulders JOHN B. CLOT. 

